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Finding the Fourth Proportional to 557,991.12, 770,087.95 and 316,247.75

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Solution

The fourth proportional to 557,991.12, 770,087.95 and 316,247.75 is: 436,456.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,991.12 : 770,087.95 = 316,247.75 : x
  2. Step 2: Convert to fraction form
    557,991.12/770,087.95 = 316,247.75/x
  3. Step 3: Cross multiply
    557,991.12x = 770,087.95 × 316,247.75
  4. Step 4: Simplify right side
    557,991.12x = 243,538,578,034.48
  5. Step 5: Solve for x
    x = 243,538,578,034.48/557,991.12
  6. Step 6: Final answer
    x = 436,456.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.